She has a younger sister and a dog named Kobushi. She also owns a cat named Ume ♀(梅), in replacement of her cat Sasuke who died. She found it at a train station and asked her father to bring it home.

When Taguchi joined Hello Pro Egg, she was a fifth grade elementary school student. On March 9, 2016, she graduated from middle school.[5] As of April 2018, she is currently attending her last year of high school.

Her rival was Ogawa Rena, because she reminds her of herself, since they have the same weaknesses and get told the same things, but after getting criticized Ogawa will pick herself up and has an attitude like she will work harder the next time. They are friends, but Taguchi still doesn't want to lose to her.

She was excited when Funaki Musubu joined Hello Pro Kenshuusei because Funaki was shorter than her.

She said because she's small, she draws attention to herself, so she was worried about messing up and having people think that that's how the entire program is and toss them aside. She thought she needed to improve herself as part of the quality of Hello Pro Kenshuusei.

Tsunku's comments: "I want a little more strength in your dancing, so you need to work on your muscles. Your sense of rhythm often still comes across as unstable, so I want you to work hard so as to improve your self-confidence."